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- W4387476819 abstract "As the only Food and Drug Administration (FDA)-approved dual-encapsulation liposome injection for treating Acute myeloid leukemia (AML), CPX-351 outperforms the standard chemotherapy treatment “DA 7+3” in terms of clinical effectiveness. Although research on dual-loaded liposomes has increased in recent years, little attention has been paid to their preparation, which can affect their quality, efficacy, and safety. This study explored various preparation processes to create the cytarabine/daunorubicin co-loaded liposome (the Cyt/Daun liposome) and eventually settled on two methods: the sequential loading approach, thin film hydration-extrusion-copper ion gradient, and the simultaneous encapsulation technique, copper ion gradient-concentration gradient. Different preparation methods resulted in different particle sizes and encapsulation efficiencies; the two aforementioned preparation processes generated dual-loaded liposomes with comparable physicochemical properties. The sequential encapsulation technique was selected for the subsequent research owing to its higher encapsulation efficiency prior to purification; the prepared Cyt/Daun liposomes had small and uniform particle size (108.6 ± 1.02 nm, Polydispersity index (PDI) 0.139 ± 0.01), negative charge (-(60.2 ± 1.15) mV), high drug encapsulation efficiency (Cyt 88.2 ± 0.24%, Duan 94.2 ± 0.45%) and good plasma stability. To improve its storage stability, the Cyt/Daun liposome was lyophilized (-40°C for 4 h, maintained for 130 min, and dried for 1200 min) using sucrose-raffinose (mass ratio 7:3; glycolipid ratio 4:1, w/w) as a lyoprotectant. The lyophilized liposomes were purple cakes, redissolved rapidly with insignificant alterations in particle size and encapsulation efficiency, and possessed well storage stability. The pharmacokinetic and tissue distribution studies demonstrated that the Cyt/Daun liposome could achieve long circulation and maintain synergic proportions of drugs within 24 h, increasing the accumulation of drugs at tumor sites. Furthermore, the in vitro/in vivo pharmacodynamic studies confirmed its good anti-tumor activity and safety." @default.
- W4387476819 created "2023-10-11" @default.
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- W4387476819 date "2023-10-01" @default.
- W4387476819 modified "2023-10-13" @default.
- W4387476819 title "Research on the preparation process of the cytarabine/daunorubicin dual-encapsulation liposome and its physicochemical properties and performances in vitro/vivo" @default.
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- W4387476819 doi "https://doi.org/10.1016/j.ijpharm.2023.123500" @default.
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